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Abstract: We present a sample of sources with convex radio spectra peaking atfrequencies above a few GHz, known as -High Frequency Peakers- HFPs. A-bright- sample with a flux density limit of 300 mJy at 5 GHz has beenpresented by Dallacasa et al. 2000. Here we present the -faint- sample withflux density between 50 and 300 mJy at 5GHz, restricted to the area around theNorth Galactic Cap, where the FIRST catalogue is available. The candidates havebeen observed with the VLA at several frequencies ranging from 1.4 to 22 GHz,in order to derive a simultaneous radio spectrum. The final list of confirmedHFP sources consists of 61 objects.



Author: Carlo Stanghellini, Daniele Dallacasa, Monica Orienti

Source: https://arxiv.org/







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